The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Epoxy insulator has been widely used in railway transmission line due to its excellent physical and chemical properties. On these transmission lines, corona could occur even on well designed hardware and insulators, which can inject the charge in the surface of insulators and damage the polymer insulators. When a composite insulator is moistened by fog or rain, charged water droplets are formed on...
The 800kv dc transmission line is now in experimental operation in china. Recently, polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties, which may apply as insulators in the UHV and EHV transmission line. A number of papers have reported enhanced electrical performance (aging and breakdown) of silicone rubber nanocomposite, but little attention has been...
This paper investigates the effect of nano-scale SiO2 on the tracking failure properties of nanocomposites. Test samples were made by dispersing nano-scale SiO2 powder in epoxy with the weight ratios of 0, 1, 3, 5, 7, 9 wt%. AC voltage was applied on a pair of needle-plate electrodes at the surface with the insulation distance of 10 mm. The time to tracking failure and discharge current were recorded...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.